I have a sub form which has option buttons to choose the type of commission and calculate the commission based on values on the main form.<br>I find that unless I place "Forms!Sold!" in front of all the field names relating to the main form (Sold), I get an error.<br><br>Does anyone know how to get around this.<br><br>Thanks,<br><br>Brian<br><br>Private Sub Normal_GotFocus()<br><br>Forms!Sold!COMMISSION = Nz(NETTPRICE) - Nz(NORMAL * 8) - Nz(TOPUP * 6.125) - Nz(SUPPLY * 6.83333) - Nz(ROOFLIFT * 11.5834) - Nz(POLYINSTAL * 8) - Nz(POLYSUPPLY * 7.08333) - Nz(POLYROOFLI * 11.5834) - Nz(REMBATTS * 2.5) - Nz(DISREMBATT * 3.333) - Nz(FLEXICOAT * 0.79167) - Nz(CHARGEX) - Nz(FINANCEX * PERIOD * 0.02) * 0.6<br><br>End Sub<br><br>